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25831652fd
(1) dictionaries/mappings now have attributes values() and items() as well as keys(); at the C level, use the new function mappinggetnext() to iterate over a dictionary. (2) "class C(): ..." is now illegal; you must write "class C: ...". (3) Class objects now know their own name (finally!); and minor improvements to the way how classes, functions and methods are represented as strings. (4) Added an "access" statement and semantics. (This is still experimental -- as long as you don't use the keyword 'access' nothing should be changed.)
121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
/***********************************************************
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Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum,
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Amsterdam, The Netherlands.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Stichting Mathematisch
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Centrum or CWI not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior permission.
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STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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******************************************************************/
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/* Function object implementation */
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#include "allobjects.h"
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#include "compile.h"
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#include "structmember.h"
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object *
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newfuncobject(code, globals)
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object *code;
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object *globals;
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{
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funcobject *op = NEWOBJ(funcobject, &Functype);
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if (op != NULL) {
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INCREF(code);
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op->func_code = code;
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INCREF(globals);
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op->func_globals = globals;
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op->func_name = ((codeobject*)(op->func_code))->co_name;
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INCREF(op->func_name);
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}
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return (object *)op;
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}
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object *
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getfunccode(op)
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object *op;
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{
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if (!is_funcobject(op)) {
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err_badcall();
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return NULL;
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}
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return ((funcobject *) op) -> func_code;
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}
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object *
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getfuncglobals(op)
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object *op;
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{
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if (!is_funcobject(op)) {
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err_badcall();
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return NULL;
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}
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return ((funcobject *) op) -> func_globals;
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}
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/* Methods */
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#define OFF(x) offsetof(funcobject, x)
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static struct memberlist func_memberlist[] = {
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{"func_code", T_OBJECT, OFF(func_code), READONLY},
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{"func_globals",T_OBJECT, OFF(func_globals), READONLY},
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{"func_name", T_OBJECT, OFF(func_name), READONLY},
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{NULL} /* Sentinel */
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};
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static object *
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func_getattr(op, name)
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funcobject *op;
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char *name;
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{
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return getmember((char *)op, func_memberlist, name);
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}
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static void
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func_dealloc(op)
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funcobject *op;
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{
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DECREF(op->func_code);
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DECREF(op->func_globals);
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DEL(op);
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}
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static object*
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func_repr(op)
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funcobject *op;
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{
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char buf[140];
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sprintf(buf, "<function %.100s at %lx>",
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getstringvalue(op->func_name),
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(long)op);
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return newstringobject(buf);
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}
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typeobject Functype = {
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OB_HEAD_INIT(&Typetype)
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0,
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"function",
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sizeof(funcobject),
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0,
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func_dealloc, /*tp_dealloc*/
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0, /*tp_print*/
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func_getattr, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_compare*/
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func_repr, /*tp_repr*/
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};
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